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Mounted police officers patrol in downtown Amsterdam, Netherlands Monday, April 29, 2013. Queen Beatrix has announced she will relinquish the crown on April 30, 2013, after 33 years of reign, leaving the monarchy to her son Crown Prince Willem Alexander. (AP Photo/Emilio Morenatti)

Mounted police officers patrol in downtown Amsterdam, Netherlands Monday, April 29, 2013. Queen Beatrix has announced she will relinquish the crown on April 30, 2013, after 33 years of reign, leaving the monarchy to her son Crown Prince Willem Alexander. (AP Photo/Emilio Morenatti)